我有一个UITableView,其中填充了titles数组中的项目,我进行了设置,以便在调用didSelectRowAt indexPath时,将一个名为arrayIndex的变量更改为indexPath,并更改下一个VC的内容。
因此,如果用户点击:
我有一个搜索栏,但是将过滤后的结果存储在searchResults数组中,并将它们显示在tableView中。执行搜索时,数组索引将不再对应,因此如果搜索查询将tableview更改为
我理解为什么它没有按预期工作,但我不知道如何更新我的逻辑来解决它。思考?这是我的代码:
ListController:
import UIKit
var arrayIndex = 0 // is used in DefinitionController to determine which title/definition/link to show.
var isSearching = false
class ListController: UIViewController, UITableViewDataSource, UITableViewDelegate, UISearchBarDelegate {
@IBOutlet var tableView: UITableView!
@IBOutlet var searchBar: UISearchBar!
// Search Delegate
func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
if searchText == "" {
isSearching = false
tableView.reloadData()
} else {
isSearching = true
searchResults = (titles.filter { $0.lowercased().contains(searchText.lowercased()) })
tableView.reloadData()
}
}
//Table Delegate
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
if isSearching == true {
// code to run if searching is true
} else {
arrayIndex = indexPath.row // assigns the value of the selected tow to arrayIndex
}
performSegue(withIdentifier: "segue", sender: self)
tableView.deselectRow(at: indexPath, animated: true)
}
// Table Data Source
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
if isSearching == true {
return searchResults.count
} else {
return titles.count
}
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
// Cell Data Source
let cell = UITableViewCell()
if isSearching == true {
cell.textLabel?.text = searchResults[indexPath.row]
} else {
cell.textLabel?.text = titles[indexPath.row]
}
// Cell Visual Formatting
cell.backgroundColor = UIColor(red:0.05, green:0.05, blue:0.07, alpha:0)
cell.textLabel?.textColor = UIColor.white
cell.textLabel?.font = UIFont(name: "Raleway", size: 18)
cell.accessoryType = UITableViewCellAccessoryType.disclosureIndicator
// if (cell.isSelected) {
// cell.backgroundColor = UIColor.cyan
// }else{
// cell.backgroundColor = UIColor.blue
// }
return cell
}
override func viewDidLoad() {
super.viewDidLoad()
self.title = "\(titles.count) Definitions"
// TextField Color Customization
let searchBarStyle = searchBar.value(forKey: "searchField") as? UITextField
searchBarStyle?.textColor = UIColor.white
searchBarStyle?.backgroundColor = UIColor(red:1.00, green:1.00, blue:1.00, alpha:0.05)
}
}
定义控制器:
import UIKit
class DefinitionController: UIViewController {
@IBOutlet var definitionTitle: UILabel!
@IBOutlet var definitionBody: UILabel!
@IBOutlet var definitionSources: UILabel!
// Open link in Safari
@objc func tapFunction(sender:UITapGestureRecognizer) {
print("tap working")
if let url = URL(string: "\(links[arrayIndex])") {
UIApplication.shared.openURL(url)
}
}
override func viewDidLoad() {
super.viewDidLoad()
definitionTitle.text = titles[arrayIndex]
definitionBody.text = definitions[arrayIndex]
self.title = "" // Used to be \(titles[arrayIndex])
// Sources Link
let tap = UITapGestureRecognizer(target: self, action: #selector(DefinitionController.tapFunction))
definitionSources.addGestureRecognizer(tap)
}
}
答案 0 :(得分:1)
尝试使用字典,其中键是您的标题,其值是包含定义和链接的字典,以及用于存储搜索结果的数组,即搜索的键。
var dictionary = ["title 0":["definition 0", "Link 0"], "title 1": ["definition 1", "Link 1"]]
func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
if searchText == "" {
isSearching = false
tableView.reloadData()
} else {
isSearching = true
for (key, value) in dictionary {
if key==searchText{
resultsArray.append(key)
}
}
tableView.reloadData()
}
}
现在当您点击List Controller
中的单元格时,让它知道您要在下一个VC中初始化和加载哪个密钥的详细信息:
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let DefinitionViewController = self.storyboard?.instantiateViewController(withIdentifier: "DefinitionViewController") as! DefinitionViewController
//initialise data for the view controller
ListViewController.initDetails(forKey: resultsArray[indexPath.row])
performSegue(withIdentifier: "segue", sender: self)
tableView.deselectRow(at: indexPath, animated: true)
}
在Definition Controller
初始化详情:
func initDetails(forKey key: String) {
definitionBody.text=dictionary[key]![0]
definitionSources.text=dictionary[key]![1]
}
答案 1 :(得分:0)
我认为在我看来这是一个非常肮脏的解决方案,因为它需要保留两套标题,所以我仍然很好奇,如果有人知道更好的方法,但这确实有效:
如果搜索(为了避免在不需要的情况下调用开关),在didSelectRowAt indexPath下,我创建了一个开关,它基本上检查所选单元格的文本并相应地设置arrayIndex的值。
let selectedCell = tableView.cellForRow(at: indexPath)?.textLabel!.text ?? "Undefined"
switch selectedCell {
case "Anger": arrayIndex = 0
case "Anguish": arrayIndex = 1
case "Anxiety": arrayIndex = 2
case "Annoyance": arrayIndex = 3
case "Apathy": arrayIndex = 4
default: print("Undefined Search Query")
}
titles数组最终会有大约55个元素,我希望将所有数据保存在一个单独的Data.swift文件中,但这是我到目前为止唯一的解决方案。